Plug box and plug



April 7, .1925. 1,532,220

' F. P. AKRQQUSEZ ET AL PLUG BOX AND PLUG Filed May l1, 192D 3 Sheets-Sheet l April 7, 1925.

F. P. ARROUSEZ ET AL PLUG BOX AND PLUG 3 Sheets-Sheet 2 mwa Amin-192s. l v`15532320- F. P. ARRoUsEzE-r A L.

PLUG Bx AND PLUG Fnd nay 11. 19,29 .s sheets-sheet s Patented pr. 7, 1925.

ier-ricas.

` Yapplication:mealmy 11,

T all Iwhom twang-connerie.' Y

:Be it known that we, FRANKP. Annon'snz and W ILLIs C. HOLLINS, both citizens Vof the United States,residinjg at Los -lAngeles, inthe county of Los Angeles fand-Stateof California, .have invented-a lnew and` useful Plug BOX-and Plug, of rwlieh'the following is 'a specification. Y K

`Our invention relates yto vportable plug 'boxes suoh as'are Aused in `motion picture studiosa'nd the like :for readily lmaking con- .'n'eotions 'to :sources Yof 4`electric power.4 y

Ehe 'principal object of'our invention vis .tpprbvidea plug box whichfis so-construot ledthat rit can be used vv0n either .threefphase ith-ree rwire; standard, vthree wire; or vtwo wire eireuits. s

The further ,object of the invention -is ito provide a novel form of plug for-use in suoli boxes. v

Referring vto the drawings *which Vvare Lfor illustrative purposes only,

Eig. l is @a section lthrough such a lbox with four improvedvform -o'f Yplug in place.

JFi'g. '2 is a section onfa fplane represented ibythellineQ--Ql of fFig. 1. l

Eigf /i's a 'sectionon a plane-represented by "the -lin'e 13-#3 'of Fig. 72. f

ICig. 4is a sectionf'ona lplane represented byl he line 4*-4'of Fig. 2, but with `fuses emitted. ,v Y 1 s 'Fig'. 5 4is a diagram of the parts with 'all removable jumpers omitted.

Fig. 6 is a diagram showing `the-arrange- :7'5 ment when thebo'xis used'on fa three phase c'x'r'eufit.

Fig. 7is diagramshowingv the arrangement when the box is used on standard Vthree wiref'eir'euit. j 'Y Fig. i8 lis la diagrarn'showing the lconnec- Etion's 'when the box is Yused sonvtwo :wire circuit.

Fig. 9 -i's 'a 1side v'elevation Iof va preferredl "foi-rn fo'f plug.

Fig. ZLOvis fa central *section 'therethrough substantially en thezline 104210:@ .Ei-g. 1.1. Figfllisfa smectin'l'ona plane represented g bly the line llll'of l Referring tothe Adrawings 'whioh'are -for illustrative ,purfp'eses only, 1111 Lis fa sheet-'0f insulation tseenred iii fthe .cent-'ei- 1era-steel bei( 12 and shown las fearryng insulating stripswl.LA Mounted kon b'fs .bars '14, 115,16, l?? :and 18 in tiienreinber liii-1:1 @as shown in fii-:areinmiasefawsree a'iidfao., thesev 1920. Seiaina 1380.666.

j aws being arranged'in pairs'shOVn as-flyi'n'g 1n parallel lverticalplanes. The 'bus 'bar r14 connects ltwo of the 'upper 'fuse ljaws 2O which are hereinafter referred t0 as the iirst two K upper inner lj a'ws. The ter-ms up'- per and lower as used herein, jhavefeferenoe tothe 4position assumed by"t1iesejws in the diagrams onstitutiii'g Figs. 'b "to 8 incl-'usine of the` drawing, it "being Y'L'inil'e'rstood of course that the boxn'ay be turned :either side up, andthatthe'words""upfper and lowerf are to be "understood a'slme'rely word-s f Convenience for idrtifi'eation 'of .the parts `and notas 'eorreetly designating the position of ,the .parts at :all times. :lhe bus bar l5 carries 'athi'rd hereinafter referred to as the third Vupper inner jaw. I

The bus bar '16 `carries 'three jaws, hereinafter referred yto as 'the Alast three upper jaws. The'bus bar 17 carries"{fo1'1r,ja`if\s l 20', hereinafter referred ltojfas Vthe yfirst f'o'u'r lower inner )jawsg and 'the lbus bar 18 "oar- .A1-.ies -two jaws 20,herein`a fter referred'ito the Ylast two-lower jaws. Secured tothe'insulatin-g strips 13 area series of outer fuse ljaws 30, 30'., these ,jaws being allfalike. `They fare shown-as entirelydiseonneeted andasfinsulated yfrom each other `by plates 1, 17,11 4(the y'latter eiitendingas f'a barrier V"of "a flexibleeable. 45 kwhich is 'shown as secured vin la yfsplit metal @over 46v by 'l'eans of Vinsu-lation members and 48, ,'claip'ed togetherb'y screws A49. Bhe YIplugg; '60Xl r 46 is preferably-made :in two hvalfife"s, meeting on Athe line .iO-ie-Q-f 11'1 "and seeujred ytQgethenbly-Seiews 50. Tlieseplugs be 'inserted-throughopenings O -i'n 'an insulating front plate E, to whieh fu'se '30, 130 arge-.shown as seemed by bolts B.; ifegeiieral efeet of the insertion of fa r`betieen a ref outer 'linee .jaws 230- 3Wy being. durft the third phase, 'the wires il. W72 W ous-ljv the interpesition of a load between an upper jaw 2O and a corresponding lower jaw Q0 otherwise insulated therefrom.

A lined jumper member is permanently connected to the bus bar 1st and passes through the member 111 into a position adjacent to the fifth ot the lower jaws 20, which is on the bus bar 18, as shown in Fig. 5. tem vable jumpers are provided; and they may be used interchangeably as illustrated in the diagrams. The box as shipped majT be without remorable jumpers and is preferably connected as shown in Fig. 5, in which the bus bars 14; to 18 inclusive are illustrated.

lVhen it is desired to use the box Ylor connecting into a three phase circuit, it may be arranged as shown in Fig. 6, (with which preceding lign correspond) a jumper being` used to connect the bus bars 15 and 16 and a jumper T1 (shown as depending from a screw being used to connect the fixed jumper 60 with the bus bar 1S, under one end ol which it is movable at will. lt now a plug P similar to that shown in Figs. 9 to 11 inclusive be inserted between anj7 pair ot contacts d0, and the three wires il T2 and V173 :trom the generator being` connected respectiveljT withu `bus bars 1G (or 15) and 17, said contacts and any translating device therebetween will be each connected into one phase of the three phase circuit, the first two sets 14; ont contacts Ll() (counting from the le't't ot Fig. 6) reeeiif'ing one phase, the second two sets receiiing a vsecond phase and the third two receivingy u being shown as connected respectivelyY with he bus bars at B1, 132 and it itis desired to connect in on either side of a three wire circuit as illustrated in Fig. 7, a jumper 'T011 is used to connect the bus bars and 15, and the jumper 71 is used to connect the bus bars 17 and 18. lilith the members arranged in this manner, suitable teed being provided, the iirst three sets ot jaws represent one side of the circuit fed, tor example, by a generator or transformer S0, and the last three sets of jaws are used to connect to a generator or to a transformer 81.

It it is desired to use the box on a single phase or on any other two-wire circuit, it may be arranged as in Fig. 8, in which the jumper 73 connects the busv bars 15 and 16 and the jumper 71b is used to connect the bus bars 17 and 18. lt will be noted that all the top jaws are connected together, all lthe bottom jaws are connected together, each set of jaws being connected to one side of a single phase circuit. lIt now a plugof the general character described is inserted in anvlot the openings of the bor, the load ted bythe cable 45 is connected into this single phase circuit.

Although we have herein described one complete embodiment of our invention, it will be understood that various features thereof might be independently employed and also that various modifications might be made, by those skilled in the art, without:- the slightest departure from the spirit and scope of our invention, the same is indicated above and in the following` claims.

We claim as our invention:

1. in a plug box: a series oit twelve jaws arranged in si); pairs, each pair comprising an upper jaw and a lower aw; means for connecting the iirst two upper jaws together; means Yfor connecting the last three upper jaws together; means ior connecting the lirst four lower jaws together; means for connecting the last two lower jaws together; a fixed jumper comprising` means permitting a connection of the first two upper jaws to the las two lower jaws, the third upper jaw and the last three upper jaws being adapted to be connected at will by a jumper; and means tor connecting the three wires ot a three phase circuit to the First two upper and last two lower, the last tour upper, and the first l'our lower jaws respectively.

2. ln a plug box: a series ot twelve jaws arranged in six pairs, each pair comprising an upper jaw and a lower jaw; means for connecting the first two upper jaws together; means lor connecting the last three upper jaws together; means for connecting the first tour lower jaws together; means `tor connecting the last two lower jaws together, said jaws beingarranged to permit the use et a jumper connecting the first two upper with the third upper jaw and the use oi'i a jumper connecting 'the lirst tour lower jaws with the last two lower jaws; means permitting the connectingol the neutral o't a three wire circuit to the six lower jaws; and means permitting the connecting oil each of the outside wires o't said circuit with one of the two sets oit three upper jaws.

3. In a plug` box: a series of twelve jaws arranged in sinv pairs, each pair comprising an upper jaw and a lower jaw; means 'for connecting the first two upper jaws together; means for connecting the last three upper jaws together; means for connecting the first iour lower jaws together; means 'for connecting the last two lower jaws together, said jaws being arranged to permit the use of jumpers connecting all orp the upper aws together and the use o'l' a jumper connecting all of the lower jaws together; and means permitting the connecting ot the two wires et a two wire circuit to the top and bottom jaws respectively.

et. ln a plug` box: a series of twelve jaws arrangedv in six pairs, each pair comprising an upper jaw and a lower jaw; means for lOS lll)

connecting the first ytwo upper jaws together; means for connecting the last three upper jaws together; means for connecting the first four lower jaws together; means for connecting the last two lower jaws together; a fixed jumper connection extending from the first two upper jaws to the neighborhood of the last two lower jaws, said jaws being arranged to permit the use of jumpers of suitable length to connect the second to the third, or the third to the fourth upper jaw, or the fourth to the fifth lower jaw, or said fixed jumper connection to the fourth lower jaw.

5. In a plug box: a series of twelve jaws arranged in six pairs,/each pair compris ing an upper jaw and a lower jaw.; insulation between certain of said pairs of jaws; means for connecting the first two upper jaws together; means for connecting the last three upper jaws together; means for connecting the first four lower jaws together; means for connecting the last two lower jaws together, said jaws being arranged to permit the use of a jumper for connecting the first two upper jaws to the last two lower jaws, and .the use of a jumper for connecting the third upper jaw and the last three upper jaws; means permitting the connection of the three wires of a three phase circuit to the first two upper and the last two lower, the last four upper, and the first four lower jaws respectively.

(i. In a plug box: a series of twelve jaws arranged in six pairs, each pair .comprising an upper jaw and a lower jaw; insulation between certain of said pairs of jaws; means for connecting the first two upper jaws together; means for connecting the last three upper jaws together; means for connecting the first four lower jaws together; means for connecting the last two lower jaws together, said jaws being arranged to permit the use of a jumper for connecting the first two upper jaws with the third upper jaw and the use of a jumper connecting the first four lower jaws with the last two lower jaws; means permitting the connecting of the neutral of a three wire circuit to the six lower jaws; and means permitting the connecting of each of the outside wires of said circuit with one of the two sets of three upper jaws.

7. In a plug box: a series of twelve jaws arranged in six pairs, each pair comprising an upper jaw and a lower jaw; insulation between the bases of some of said pairs of jaws; means for connecting the first two upper jaws together; means for connecting the last three upper jaws together; means for connecting the first four lower jaws together; means for connecting the last two lower jaws together, said jaws being arranged to permit the use of jumpers connecting all of the upper jaws together and connecting all of the lower jaws together; and means permitting the connection of the two wires of a two wire ci"- cuit to the top and bottom jaws respectively.

8. In a plug box: a series of twelve arranged in six pairs, each pair comprising an upper jaw and a lower jaw; barriers between the bases of some of said jaws; means for connecting the first two upper jaws together; means for connecting the last three upper jaws together; means for connecting the first four lower jaws together; means for connecting the last two lower jaws together; a permanent crossover connection extending from the first two upper aws to the neighborhood of the last two lower jaws, said jaws being arranged to permit the use of jumpers of suitable length to connect the second to the third, or the third to the fourth upper aw, or the fourth to the fifth lower jaw, or said crossover to the fifth lower jaw.

In testimony whereof, we have hereunto set our hands at Los Angeles, California, this th day of May, 1920.

FRANK P. ARROUSEZ. WILLIS C. HOLLINS. 

